Smartphone & Tablet

2.5mm Phone Headset

Smaller than 3.5mm plugs, the 2.5mm plug has two black rings.

Used with:

Most home phones

Some office phones from AT&T, Linksys, and Cisco

Some older Blackberry phones

Xbox 360 also uses a 2.5mm headset

At this time we only have adapters that work with 2.5mm headsets with two black rings. If your 2.5mm plug has three black rings (usually Nokia, Ericsson, or LG older cell phone headsets), none of our adapters will function properly.

RJ9

Also called RJ10 and RJ11, this plug looks like a phone jack, but slightly smaller. Used with:

VOIP office phones from a number of makers including Nortel, ESI, NEC, and others.

*Most phones will use our "RJ9A" models. Cisco phones use a different wiring, so if you're purchasing for a Cisco phone, make sure the Headset Buddy model number ends in "RJ9Cisco."

**We recommend using our RJ9 adapters with amplifiers as sometimes the microphone volume will be a little low, depending on the headset and phone combination.